No pricing === you are the product
True, but is this no pricing? At a glance it appears to be available only to Workspace customers, which I believe you have to pay for (at least I've been paying for it for years).
I'd argue it's the least valuable data. They can't look at it, they have regulatory, legal and contractual commitments to protect it, they have paying customers that will be very angry if it's lost or unavailable, and yet they can't mine it or train models with it or monetize it.